thanks for your help, i installed the beta blockchain drivers and mod the bios with the one timing patch and now my card are working around 24/25. My MSI Afterburner seems not working, i cant edit the mhz of ram and cpu any solutions?
You don't overclock the cpu and memory. You can overclock the GPU core clock and memory with Afterburner like it shows in the video. Make sure it's the latest version of Afterburner 4.4.0 beta 19. You can also adjust the power limit and unlock the voltage control in the settings to undevolt the card to use less power. I use a -96 mV core voltage and -15% power limit.
If it still doesen't work with the latest Afterburner, uninstall the drivers in safe mode using DDU like it shows in the video, reinstall the blockchain driver and run the pixel patcher once it's finished and reboot.